Recent Publications


Emerging dissipative phases in a superradiant quantum gas with tunable decay
Francesco Ferri; Rodrigo Rosa-Medina; Fabian Finger; Nishant Dogra; Matteo Soriente; Oded Zilberberg; Tobias Donner; Tilman Esslinger
Arxiv preprint 2104.12782 (2021)
ArXiv: 🔗 link
Suppressing dissipation in a Floquet-Hubbard system
Konrad Viebahn; Joaquìn Minguzzi; Kilian Sandholzer; Anne-Sophie Walter; Frederik Görg; Tilman Esslinger
Arxiv preprint 2003.05937 (2021)
ArXiv: 🔗 link
Physical Review X, 11, (2021)
Paper: 🔗 link
Cavity QED with Quantum Gases: New Paradigms in Many-Body Physics
Farokh Mivehvar; Francesco Piazza; Tobias Donner; Helmut Ritsch
Arxiv preprint 2102.04473 (2021)
ArXiv: 🔗 link
First order phase transition between two centro-symmetric superradiant crystals
Xiangliang Li; Davide Dreon; Philip Zupancic; Alexander Baumgärtner; Andrea Morales; Wei Zheng; Nigel R. Cooper; Tobias Donner; Tilman Esslinger
Arxiv preprint 2004.08398 (2021)
ArXiv: 🔗 link
Physical Review Research, 3, (2021)
Paper: 🔗 link
Flat band transport and Josephson effect through a finite-size sawtooth lattice
Ville A. J. Pyykkönen; Sebastiano Peotta; Philipp Fabritius; Jeffrey Mohan; Tilman Esslinger; Päivi Törmä
Arxiv preprint 2101.04460 (2021)
ArXiv: 🔗 link
Phys. Rev. B, , (2021)
Paper: 🔗 link
Interaction-assisted reversal of thermopower with ultracold atoms
Samuel Häusler; Philipp Fabritius; Jeffrey Mohan; Martin Lebrat; Laura Corman; Tilman Esslinger
Arxiv preprint 2010.00011 (2020)
ArXiv: 🔗 link







Welcome to
Prof. Tilman Esslinger's
Quantum Optics Group





In our research we use ultracold atoms to synthetically create key models in quantum many-body physics.

The properties of the trapped quantum gases are governed by the interplay between atomic motion and a well characterized interaction between the particles. This conceptual simplicity is unique in experimental physics and provides a direct link between the experiment and the model describing the system. It enables us to shine new light on a wide range of fundamental phenomena and address open challenges.

We explore the physics of quantum phase transitions and crossovers, low-dimensional systems and non-equilibrium dynamics, and thereby establish the basis for quantum simulation of many-body Hamiltonians.

For example, by loading a quantum degenerate gas of potassium atoms into the periodic potential of an optical lattice we realize Hubbard models with atoms and access superfluid, metallic and Mott-insulating phases. A many-body system with infinitely long-range interactions is formed by trapping a Bose-Einstein condensate inside an optical cavity, which has allowed us to observe the Dicke quantum phase transition from a normal to a superradiant phase. We also work on extending the concepts of quantum simulations to device-like structures connected to atomic reservoirs, using a combination of high-resolution microscopy and transport measurements.


We acknowledge funding from SNF and ETH Zürich, NCCR QSIT, SBFI QUIC and the European Union (ERC TransQ, ERC Marie Curie TopSpiD, ETN ColOpt).

Funding

Labs+



News


01 June 2021
Simon joins the group
Simon Wili started his PhD in the Lithium team. Welcome!

01 June 2021
Welcome Stephan
Stephan Roschinski started his master project in the Lattice team. Welcome!

20 April 2021
Welcome Beat
Beat Nairz started his semester project in the Impact team. Welcome!

01 March 2021
Marius starts his master thesis
After his semester project, Marius Gächter now continues working in the Cavity team as a master student.

15 February 2021
Welcome Carlos
Carlos Eduardo Maximo, postdoc at the University of São Carlos, is our academic guest during this year. Welcome in the QO group !

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